Novel automatic positioning, dismounting and mounting mechanism for hydraulic support pin shaft

The invention relates to the field of hydraulic support pin shaft dismounting and mounting equipment, in particular to a novel hydraulic support pin shaft automatic positioning dismounting and mounting mechanism which comprises a three-dimensional moving support and a dismounting and mounting mechanism, the dismounting and mounting mechanism comprises a fixing frame, a starting motor, a center gear, a center lead screw and a bottom plate, and an output shaft of the starting motor is coaxially and fixedly connected with a driving gear; a central gear is coaxially and fixedly connected with a central lead screw, the central lead screw is externally in threaded connection with a shaft sleeve, an inner gear ring is fixedly arranged on a bottom plate, a connecting rod is fixedly arranged on a middle plate, the connecting rod is hinged to a setting rod, a clutch rod is hinged to the setting rod, and the two ends of the clutch rod are connected with a synchronous gear and a clutch gear respectively. When the output